The earliest photosynthetic organisms
A) probably used water as a source of hydrogen.
B) probably did not produce oxygen.
C) probably used hydrogen sulfide as a source of hydrogen.
D) date back to the time when life first emerged on Earth.
E) possessed chloroplasts.
Correct Answer:
Verified
Q27: Probably the greatest advantage for the original
Q28: About 530 million years ago, what adaptation
Q29: Water-based photosynthesis converts carbon dioxide and which
Q30: The oxygen that arose in early Earthʹs
Q31: The endosymbiotic hypothesis accounts for the origin
Q33: An anaerobic prokaryote engulfs a prokaryote capable
Q34: If early Earthʹs atmosphere contained little or
Q35: The earliest fossil organisms resemble modern
A) prokaryotes.
B)
Q36: To survive successfully on land, plants needed
Q37: Modern invertebrates first appear in the fossil
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